Steam cleaners are not recommended. The high heat associated with steam cleaners may temporarily soften the grout line. We do not recommend repeated softening and hardening of the grout lines. Regular sweeping and damp mopping will keep your floor looking its best. A flooring detergent, such as Spic and Span or the Swiffer, may be used to clean sticky spills or for deep cleaning. Periodically, the grout lines will need a deep cleaning. Soft Scrub with Bleach and a soft, bristled brush will remove the accumulated dirt.